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CVE-2022-38871

25
FAUCET Score

CVE-2022-38871 describes a denial-of-service vulnerability in Free5gc v3.0.5, where the Access and Mobility Management Function (AMF) crashes upon receiving malformed NAS messages. This vulnerability carries a CVSS score of 7.5 (High), indicating a network-exploitable attack with low complexity that can lead to high availability impact without requiring user interaction or privileges. While no public exploit code or active exploitation has been observed, and community discussion is minimal, the potential for service disruption remains.

Impacted Technologies

VendorProductVersion(s)CPE
3.0.5CPE matchmatch criteria
cpe:2.3:a:free5gc:free5gc:3.0.5:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.73%
Probability of exploitation in next 30 days
EPSS Percentile
50.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0073 is in the 26th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

goGHSA-m74x-fxjh-3qh9high

Free5gc vulnerable to uncontrolled resource consumption

Nov 19, 2022

References

github.com / free5gc/free5gc/issues/198
ExploitIssue TrackingThird Party Advisory